GE 68K System manual DM Debug Mode

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	68K System Monitor
GE Energy Services	User's Guide

DM - Debug Mode

Platform

Description

Syntax

þ CPM þ D20	þ D20 ME	o D20/200	o D20/200 ME	o D25
D20 Base	D20 Base	CCU Base	CCU Base

Use this command to enable or disable product-specific debugging modes.

•For the 68020, (D20M) and 68EC030 (D20 ME) it disables the on-chip instruction cache.

•For the 68332, (CPM) it enables show cycles.

When enabled, both of these debug mode instructions allow external bus monitoring.

Below is usage and syntax information for this command

	Command Format	dm /(d e)

	Variables	/d	= disable debug mode (Enable cache or disable
			show cycles)
		/e	= enable debug mode (disable cache or enable
			show cycles)

	Parameters	None.

	Example	Type dm /e and press enter.
		Results:	This command disables the 68020 or 68EC030 on-
			chip instruction cache or, enables show cycles for
			the 68332.
			The system returns the prompt upon completion of
			this instruction.

	Special	Enabling the Debug Mode degrades the performance of the
	Considerations	system and may cause certain CPU intensive commands to
		activate the watchdog and reset the system.

SWM0023 1.00 2

General

3-28	Full Release

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Contents 68K System Monitor 2002, General Electric Canada Inc. All rights reserved Modification Record Users Guide Table of Contents Erase DstatEcho ETHAbout This Document OverviewPurpose and Audience of this User’s Guide Support Services and Training GEHCalgary.Support@ps.ge.com68K System Monitor Connecting and Using the 68K Monitor D20MES Connecting to the 68K MonitorMonitor D20MEACommand Input and Response Commandname parameters argumentsW l f d address Regular Keyboard Input 68K Monitor Display Error Messages Message Summary Command Grouping General System Commands Diagnostic Commands Memory Commands Process Commands Exchange Commands Breakpoint Commands Configuration Maintenance Commands 68K Monitor Commands Command / Platform Cross-Reference Platform-Specific CommandsList of Commands Monitor Commands AL Change Auto-logout TimerBaud Set Baud Rate Supported data rates, in bps, are Boot Startup Cache Control Cache CAL Calibrate KI For use by qualified programmer onlyCB Clear Breakpoint CCA Change Configuration File Attributes CCB Create Configuration Storage Block Parameters Type ccb 600000 100000 400 2 and press EnterCCF Clear Configuration File Used only when multiple storage regions are definedCF Copy File EpromCLS Clear Screen CP Change Priority CS Check Sum CCU / CcumeMessage Checksum is and should be Dump Memory Syntax DB Define Breakpoint Debug Debug Mode Do you wish to update the Nvram header? y/nIs this data accurate? Y/N Type df /b config.bin and press Enter DF Display File DataDHW Display Hardware Data DIR Directory D25 NvramSpecial Considerations DL Download DM Debug Mode Dstat Decompression Status Edit Memory Address = address to edit in hexadecimal notation Echo Echo Toggle EL Error Log Erase Flash Erase D20 ME / CcumeETH Ethernet Address Exit Exit Fill Memory Type f /w 200000 200400 F034 and press EnterFT Find Table HE or Help Help CCU / Ccume / D25HT Hdlc Test IMG Display Image Information JTF Jump To Flash JX Jam Exchange Type jx 304540 1 2 3 4 and press EnterKIM KI Metrics Move Memory Type m 200000 200400 200 and press EnterPB Print Breakpoint PR Profile Important points to note PRG Program Flash QC Query Configuration Storage Parameters QP Query Process All numeric data displayed is in hexadecimal notation QR Query RAM NvramQX Query Exchange Syntax RB Resume Breakpoint RP Resume Process RR Report RAM Partitions RT RAM Test Type rt /gn 510000 5100b0 25000 and press EnterSyntax RTB Return To BootROM RTC Test CCU RTC RX Request Exchange RZ Zmodem Download RZ Zmodem Download SA Serial Analyzer Buffer overflow SB Step Breakpoint SC Select Active Configuration SET Set System Parameters Very dangerous to use, only for programmersEarlier versions of the Monitor, this command was dhw SI Display System InformationSP Suspend Process This function stops the execution of tasks within the remote ST Serial Test Loop Test SX Send Exchange Type sx 304540 1 2 3 4 and press EnterSysc System Test Invoke Test Tool TxxxTR Trace Type tr /r 20 /t0 10 208000 != 12345678 and press Enter Type tr /r 20 /t0 10 208000 = 12345678 and press EnterType tr /r 20 /t0 10 208000 change and press Enter Type tr /r 20 /t1 10 00123456 and press EnterUL Upload VER Version VP Signal Process Winm WIN Metrics Index KIM